21353110

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{68881}}^1$

素因数の和:68919

約数の個数: 16

約数和(自身を含む): 39676032

約数和(自身を除く): 18322922

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 68881, 137762, 344405, 688810, 2135311, 4270622, 10676555, 21353110]

約数ペア:

[(1, 21353110), (2, 10676555), (5, 4270622), (10, 2135311), (31, 688810), (62, 344405), (155, 137762), (310, 68881)]